Yandere Female x Female Reader

Struggling because her mother just remarried, (y/n) fights with her step brother. The one that helps (y/n) forget that is her best friend, Akari. But, that kind smile, those sparkling eyes, the gentle features Akari shows....are only for (y/n). Even Akari has a side to her that will begin to make (y/n) worried. "I'll...